Swix Ski Classics is the long distance ski championships, consisting of the most prestigious ski events in the world: La Diagonela Switzerland, Jizerska Czech Republic, Marcialonga Italy, König Ludwig Lauf Germany, Vasaloppet Sweden, Birkebeinerrennet Norway and the Swix Ski Classics Final Årefjällsloppet Sweden, all 50km or more and open for professional as well as amateur skiers.